Majority of our products is available in a form of .exe instalation pack. At the beginning of installation, it is necessary to set path to the game and a licence key (You can find it in confirmation email of Your order or in My account/Orders section).
The game is most often installed in these paths
C:\Program Files\Steam Games\SteamApps\common\RailWorks
C:\Program Files (x86)\Steam Games\SteamApps\common\RailWorks
or some other paths to Steam games folder.